var fDesc=new Array(); fDesc[0] = "It offers a graphically rich and dynamic ventilation environment with many more features than the original Ventsim Classic. Ventsim was originally introduced to mining operations in 1994 to help visually design, improve and optimise underground ventilation systems. It is now licensed to over 1000 mine sites, consultants, universities, governments and research agencies around the world."; function tShowHide(id, show) { var s = document.getElementById("desc"); if ((s.innerHTML.length<=212 || show==1) && show!=2) { s.innerHTML = fDesc[id]; if (document.getElementById('m1')) document.getElementById('m1').style.display='none'; if (document.getElementById('m2')) document.getElementById('m2').style.display='none'; if (document.getElementById('more_txt')) document.getElementById('more_txt').style.display='inline'; } else { s.innerHTML = ''; } }